/* paint.c -- 使用条件运算符*/
#include<stdio.h>
#define COVERAGE 350
int main(void)
{
    int sq_feet;
    int cans;

    printf("Enter number of square feet to be painted:\n");
    while (scanf("%d", &sq_feet) == 1)
    {
        cans = sq_feet / COVERAGE;
        cans += (sq_feet % COVERAGE == 0) ? 0 : 1;
        printf("You need %d %s of paint.\n", cans,
                cans == 1 ? "can" : "cans");
        printf("Enter next value (q to quit):\n");
    }
    
    return 0;
}